Wikipédia:Képletleíró nyelv
2 N a + C l 2 → 2 N a C l {\displaystyle \mathrm {2\ Na+Cl_{2}\rightarrow 2\ NaCl} }
2 L a + 3 F 2 → 2 L a F 3 {\displaystyle \mathrm {2\ La+3\ F_{2}\rightarrow 2\ LaF_{3}} }
2 C a ( O H ) 2 + 2 C 3 H 4 O H ( C O O H ) 3 → C a 2 H 2 ( C 3 H 4 O H ( C O O ) 3 ) 2 + 2 H 2 O {\displaystyle \mathrm {2\ Ca\left(OH\right)_{2}+2\ C_{3}H_{4}OH\left(COOH\right)_{3}\rightarrow Ca_{2}H_{2}\left(C_{3}H_{4}OH\left(COO\right)_{3}\right)_{2}+2\ H_{2}O} }
F e 3 + + 3 e − → F e {\displaystyle \mathrm {Fe^{3+}+3\ e^{-}\rightarrow Fe} }
H C ≡ C H + H 2 O → H 2 S O 4 H g C H 2 = C H − O H ⏟ vinil-alkohol → C H 3 − C = O − H ⏟ acetaldehid {\displaystyle \mathrm {HC\!\equiv \!CH+H_{2}O{\xrightarrow[{H_{2}SO_{4}}]{Hg}}\underbrace {\mathrm {CH_{2}\!=\!CH\!-\!OH} } _{\text{ vinil-alkohol}}\rightarrow \underbrace {\mathrm {CH_{3}\!-\!C\!=\!O\!-\!H} } _{\text{ acetaldehid}}} }